Fuel-saving and smoke-consuming device.



L. 0*. WEST. FUEL SAVING AND SMOKE CUNSUMTNG DEVICE.

APPLICATION FILED JUNE 25.191].

1,267,297. Patented May 21, 1915.

3 SHEETS-SHEET 1.

lEll L. D. WEST.

FUEL SAVING AND SMOKE CONSUMBNG DEVICE.

APPLICATION HLED JUNE 25.19-

Patented May 21,1918.

3 SHEETSSHEET 2.

LD. WEST.

FUEL SAVING AND SMOKE CONSUMING DEVICE.

APPLICATION FILED JUNE 25,19w

1,267,297. Patented May 21,1918.

3 SHEETS-SHEET 3.

amlmwtoz fllitowup UNITED STATES PATEN T OFFICE.

LEONIDAS D. WEST, 01 DENVER, COLORADO.

FUEL-SAVING AND SMOKE-CONSUMING DEVICE.

Specification of Letters Patent.

Patented May 3'. 1 91? Application filed June 25, 1917. Serial No. 176,822.

Snmkatonsuming Devices; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it apex-mains to make and use the same.

My in ention relates to that class of devices intended to increase combustion in stoves and furnaces, by the injection of a suliiricut quantity of highly heated air, the id -z: "mg that such air shall mingle with the gases in thc fire box or other combustion chamber to form a highly combustible mixture. This mixture, in burning, consumes the smoke and this prevents the accumulation of soot and carbon in the stove, furnace or other device with which the invention is employed.

I am aware that devices of the same general nalure as my own, have heretofore been used, but the general policy has been to mount the air-supplying device on the furnace door. This can easily be done in such cases as permit the door being opened with out danger of the air-supplying device striking t e door frame, but on other designs of those devices, this is not possible. The principal object of the present invention therefore, is to provide an air-supplying device formed in two sections, one of the sections bein fixedly carried in the stove or furnace, W ereas the other one is carried on the furnace door.

Another object of the invention is to so construct the device as to permit the same to be extended a greater or less amount into the fire box or combustion chamber, whereby it may be subjected to the necessary amount of heat for properly raising the temperature of the air passing thercthrough.

A still further object is to supply air currents at difierent temperatures, so that a circulation is caused in the stove or furnace, such circulation serving to form a thorough mixing of the incoming air with the hot gases and smoke in the stove or furnace.

With the foregoing general objects in view, the invention resides in the novel fea tures of construction and unique combinations of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by drawings which form a cation and in which:

Figure 1 is a perspective view of the invention applied to a furnace, the door of the latter being shown in an open position; Fig. 2 is a vertical longitudinal section of the accompanying part of the specifithe air-supplying device, showing the door of the furnace closed;

Fi 3 is a vertical transverse section on the ene of the line 3-3 of Fig. 2; and

Fig. 4 is a vertical section of a furnace showing a slightly different manner of supplying air to the two passages of the device. In the drawings above briefly described, the numeral 1 designates the door frame of a stove or furnace, it being through this frame that the fuel is fed to the fire box, and 2 designates the usual hinged door of the frame 1, it being upon this door that part of the present invention is mounted.

Secured to the inner side of the frame 1 or to any other suitable part, by means of screws or the like 3, i a flat vertically disposed casing 4 having a downwardly and outwardly inclined inner end 5, the outer end 6 of said casing being disposed in a vertical plane and having upper and lower air inlots 7 and 8. The inlets 7 and 8 register with upper and lower air supplying pipes 9 and 10 respectively, said pipes passing slidably through suitable guides 11, secured to the door 2 and being clamped in fixed position by set screws or other suitable devices 12. The outer Cllll of pipe 9 is pro vided with a valve 13 having a pivoted member 14 for controlling theamount of air passing thercthrough, Whereas the outer end of pipe 10 is Jrovided with a valve 15 having a slit 16 or admitting a greater or less amount of air. The inner ends of the passage members or pipes 9 and 1.0 are provided with collars 17 which are so shaped as to come into fluid tight contact with the end 6 of the casing 4, so as to be sure that the incoming air shall pass into said casing through the inlets 7 and 8 with which said pipes register.

I e upper pipe discharges into a comparatively short air heating passage 18 which extends across the upper end of the casing 4, the extreme rear end of this passage being directed downwardly at 19 and having its delivery end flush with the face of the inclined end 5. Said delivery end of passage 18, receives therein a reduced neck 20 on the rear end of a suitable pipe connection it, said neck being secured in place by a set screw or the like 22. The opposite end of the pipe connection 21 receives a neck .13 on the front end of a suitable air spraying device 'J-l. the neck 23 being held in place by a set screw 2.) or by other suitable means.

The air spraying device 24 may be of any suitable construction but it preferably consists of a casing 24., open at one end and having at its other end an opening 26, the open end of said casing being closed by a suitable cap 27 having a tubular passage member 28 pass-hu through the casing 2-1". The member 28 ex ends through the casing 2i and projekts throu h the opening 26.

to form the neck 23. 'fhc inember 2S and cap 27 are both provided iv ith perforations 29 for discharging the air into the fire box or combustion chamber. This air is heated to the rcqulred extent by passage through 12*, but is heatedto a greater extent as it is discharged into the ,casingfld, the latter being subjected to the llamas in the tire box or to the hot gases in any other location at which the device may be positioned.

The air inlet 8 communicates with a comparatively long air heating passage 3f), said passage beingoi' zig zag formation as shown clearly in Fig. :2, being formed by alternately arranged staggered partitions 3i and respectively, the former projecting inwardly from the end Gflof casing 4, whereas the partitions 32 extend from an inclined partition 32 which diverges upwardly in re speet to the inclined end of the casing. Adjacent its lowerfiend, the rear end 5 of the casing 4 is formed. with an outlet opening 34, said opening receiving a reduced neck 35 on the front end of a suitable airspraying device 36, said device being prcfcrably of the shape shown and having perl'orationsfi? in its head for discharging the heated air. A set scren; or the like 38 is employed for clamping the. neck 35 in place.

It is to be observed that the two passages 18 and 30 differ greatly in length and that the latter is so positioned that it will be more highly heated by contact with the flames or the like in the furnace or stove. B y this arrangement, the air passingthrough passage 30 will be heated to a greater extent than that going through the other passage, the result being that the two currents of hot air, at difi'urent temperatures, will start a violent circulation within the combustion chamber or fire box, this circulation serving to insure thorough mixing of the incoming air with the hot gases and smoke in the stove, furnace or the like. The two currents of air are sprayed in a plurality of jets, by the spraying devices 24 and 36, and it will he understood that these devices may vary n size and contour according to requirement.

Similarly, the size of the entire device may be increased or decreased as occasion may require. Regardless of size and shape however, the device will be highly ellicicnt for the purposes intended. I attach great importance to the fact that the air supply pipes 9 and 10 are carried bodily by the door whereas the remainder of the device is mounted within the stove or furnace. By thigconstruction, the entire structure may be of the required size, but it me be made larger than would be possible it it were carried totally by the door. \Vhenever the door 2 is opened the pipes 9 and 10 are disengaged from the inlets of the casing 4, but upon the-closing of said door, the parts again registered so that the incoming air will be directed into the two passages 18 and 30.

I also wish to lay particular einlfihaais upon the fact that the pipes 9 and 10 ar slidable through the guides 11. By this a rangcment, the casing 4 may be located a comparatively great distance in rear of the door, it found necessary, yet said pipe may be of sutlicient length to cooperate properly with the inlets 7 and 8, it being onlynecessary to slide the pipes through the guides 11 and then tighten the thumb screws or the like 12. Another rather important feature is that the restricted necks 20 and 35 of the air spraying devices 24- and 36 respectively, serve to choke down the discharge of air from the casing 4. This air is thus caused to linger a greater length of time in the case, ing, so that thorough heating thereof is in sured. This choking down of the air increases the clliciency of the device rather than decreasing the same, since actual use has shown that a restricted quantity of air heated to the proper temperature, produces much better results than an abundant quantity of air which is poorly heated.

Other advantages of the invention are that the same is formed in a plurality of parts any of which may be easily replaced if broken or damaged, it being simply necessary in such cases, to remove a set screw or the like in order that the injured part may be removed. Furthermore, by connecting v the several parts substantially as shown and described, parts of suitable size and shape may be readily applied to thedevice when the same is being installed.

In Fig. 4, the application of the invention is shown to a furnace or the like, having an unusually wide dead plate 1 at the bottom of the door frame 1. When furnaces of this character are used. in order to prevent the carrying of exceptionally long air supply pipes on the door 2, the pipes 9 and 10 preferably branch from a vertical pipe 10 which leads through the dead,plate 1 to the ash pit 2. This arrangement not only overcomes difiicuities which would other 130 are obtained by the specific arrangement of parts shown and described, which arran ement constitutes the preferred form of t e fucl'savin and smoke consuming device. I wish it un erstood, however, that within the scope of the invention as claimed, numerous minor changes may be made without s. ficing the principal advantages.

. 0 claim is herein made to means broadly for supplyin heated air at diiferent temperatures an elevations to the fire box, nor to the construction of the spraying device 24, as my copending applicatlon serial No. 174,319, filed June 12, 1 917, is intended to cover these features.

I claim:

1. A fluid feeding device for combustion chambers of stoves and furnaces, said device being adapted to be fixedly mounted in the stove or furnace and comprising a bod subjccted to heat and having a downward y and outwardly inclined inner end formed with up er and lower outlet openings, the outer en of said body havin a pair of inlet openings, said body having fluid heating passages of difierent lengths leading from the inlet openings to the outlet openings, a relatively long spraying device extending from the upper outlet, and a comparatively short spraying device extending from the lower outlet said spra ing devices being secured to said body an communicating with said outlets.

2. A fluid feeding device for the combusdevice being adapted to be fixedly mounted in the stove or furnace and comprising a i body subjected to heat and having a downwardly and outwardly inclined inner end formed with upper and lower outlet openings, the outer end of said body having a pair of vertically spaced inlet openin said body havin fluid heating assa o difierent lengths eading from 51 to the outlet openings, and fluid s raying devices at said outlet openings, sai spraying devices being secured to said body and communicating with said outlet openings.

3. A fluid feeding device for the combustion chambers of furnaces comprisin a hollow substantiall fiat vertically isposed body having a ownwardly and outwardly inclined rear end wall, said wall having at each of its upper and lower ends a hot air outlet, the front end wall of said body having an air inlet in each of its upper and lower ends, the up er rtion of said bod havinga horizonta air eatingpassage lea ing from the upper inlet to the upper outlet, a partition in said body leading upwardly fromthe rear end of its bottom to a point below said passage, and staggered horizontal partitions extending from said first named partition and from said front end wall to form a zig-zag air heatin passage leading from the lower inlet to t e lower outlettogether with air s rayin devices extending from both of said out ets, said spraying devices being secured to said body and communicating with said outlets.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

LEONIDAS D. WEST.

Witnesses:

GEO. A. HINDS, W. M. WALLACE.

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